.#{$prefix}form-field-separators {
    > .#{$prefix}field {
        border-bottom: 1px solid bottom($textfield-input-border-color);
    }

    > .#{$prefix}textfield {
        &.#{$prefix}focused {
            @include border(
                bottom($textfield-input-border-width),
                bottom($textfield-focused-input-border-style),
                bottom($textfield-focused-input-border-color)
            );
        }

        &.#{$prefix}invalid {
            @include border(
                bottom($textfield-input-border-width),
                bottom($textfield-invalid-input-border-style),
                bottom($textfield-invalid-input-border-color)
            );
        }
    }
}